Add support for vin/vout hashes inside an array

-Some blockchains store certain vin or vout addresses within an array instead of as a simple string which would cause them to be read improperly by the explorer and result in transactions that were not attributed to the proper address. It also caused multiple inputs/outputs from the same address in a single transaction to not be grouped together like other transactions in the explorer

lib/database.js

@@ -122,6 +122,12 @@ function save_tx(txid, blockheight, cb) {
           lib.syncLoop(vin.length, function (loop) {
             var i = loop.iteration();
 
+            // check if address is inside an array
+            if (Array.isArray(nvin[i].addresses)) {
+              // extract the address
+              nvin[i].addresses = nvin[i].addresses[0];
+            }
+
             update_address(nvin[i].addresses, blockheight, txid, nvin[i].amount, 'vin', function() {
               loop.next();
             });
@@ -129,6 +135,12 @@ function save_tx(txid, blockheight, cb) {
             lib.syncLoop(vout.length, function (subloop) {
               var t = subloop.iteration();
 
+              // check if address is inside an array
+              if (Array.isArray(vout[t].addresses)) {
+                // extract the address
+                vout[t].addresses = vout[t].addresses[0];
+              }
+
               if (vout[t].addresses) {
                 update_address(vout[t].addresses, blockheight, txid, vout[t].amount, 'vout', function() {
                   subloop.next();

lib/explorer.js

@@ -72,6 +72,12 @@ function convertHashUnits(hashes) {
 function processVoutAddresses(address_list, vout_value, arr_vout, cb) {
   // check if there are any addresses to process
   if (address_list != null && address_list.length > 0) {
+    // check if vout address is inside an array
+    if (Array.isArray(address_list[0])) {
+      // extract the address
+      address_list[0] = address_list[0][0];
+    }
+
     // check if vout address is unique, if so add to array, if not add its amount to existing index
     module.exports.is_unique(arr_vout, address_list[0], 'addresses', function(unique, index) {
       if (unique == true) {
@@ -1233,6 +1239,12 @@ module.exports = {
               if (tx.vout[i].scriptPubKey.addresses || tx.vout[i].scriptPubKey.address) {
                 var new_address = tx.vout[i].scriptPubKey.address || tx.vout[i].scriptPubKey.addresses[0];
 
+                // check if address is inside an array
+                if (Array.isArray(new_address)) {
+                  // extract the address
+                  new_address = new_address[0];
+                }
+
                 module.exports.is_unique(addresses, new_address, 'hash', function(unique, index) {
                   if (unique == true)
                     addresses.push({hash: new_address, amount: tx.vout[i].value});
@@ -1252,6 +1264,13 @@ module.exports = {
                     if (p2pkh_address != null) {
                       // mark this tx as p2pk
                       tx_type = 'p2pk';
+
+                      // check if address is inside an array
+                      if (Array.isArray(p2pkh_address)) {
+                        // extract the address
+                        p2pkh_address = p2pkh_address[0];
+                      }
+
                       // save the P2PKH address
                       module.exports.is_unique(addresses, p2pkh_address, 'hash', function(unique, index) {
                         if (unique == true)